AP. Hashable as keys
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# -*- coding: utf-8 -*-
from __future__ import print_function
# Here's a small example of some possible (not all of them) values that
# can be used as dictionary keys. All of them are immutable.
key_fzs = frozenset({1, 2, 3})
key_str = "Amelie"
key_int = 2
key_dbl = 3.1415926
key_lng = 2**100
container = {
key_fzs: "frozen set as key",
key_str: "string as set",
key_int: "integer value as key",
key_dbl: "floating point number with double precision as key",
key_lng: "long number as key"
}
print(container)
print(container[frozenset({1, 2, 3})])
Python
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